Drill guide for orbital implant
First Claim
1. A drill guide for use in drilling a hole in an orbital implant for placement of a prosthesis mounting peg using a surgical drill having a rotating drill burr and a nonrotating drill nose, comprising:
- a cylindrical housing assembly defining a proximal end and a distal end, said distal end defining a plurality of axially protruding fixation pegs, said housing assembly further having a central bore extending between said proximal and distal ends,an adaptor insert having an outer cylindrical surface dimensioned to freely slide into said housing bore and having an inside bore shaped to engage said drill nose, andstop means for allowing said adaptor insert to be displaced into said housing bore to a predetermined depth whereby when said distal end is placed against said implant and said adaptor insert is placed onto said drill nose, said drill is guided to form a hole in said implant of a limited depth.
1 Assignment
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Accused Products
Abstract
This invention relates to a drill guide particularly useful for drilling an accurately located and oriented bore of limited depth into an orbital implant for purposes of fixating an orbital prosthesis. The drill guide comprises a cylindrical housing, the distal end of the housing defines a plurality of fixation pegs which are engagable with the orbital implant. An adaptor insert is placed on the nonrotating nose of a surgical drill which defines an outer diameter which is closely received by the drill guide housing. Features are provided to limit the depth of insertion of the adaptor insert. After placement of the drill guide on the orbital implant the surgical drill can be advanced until the physical stop is reached providing a limited depth bore which can be accurately located and oriented.
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Citations
11 Claims
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1. A drill guide for use in drilling a hole in an orbital implant for placement of a prosthesis mounting peg using a surgical drill having a rotating drill burr and a nonrotating drill nose, comprising:
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a cylindrical housing assembly defining a proximal end and a distal end, said distal end defining a plurality of axially protruding fixation pegs, said housing assembly further having a central bore extending between said proximal and distal ends, an adaptor insert having an outer cylindrical surface dimensioned to freely slide into said housing bore and having an inside bore shaped to engage said drill nose, and stop means for allowing said adaptor insert to be displaced into said housing bore to a predetermined depth whereby when said distal end is placed against said implant and said adaptor insert is placed onto said drill nose, said drill is guided to form a hole in said implant of a limited depth. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A drill guide for use in drilling a hole in an orbital implant for placement of a prosthesis mounting peg using a surgical drill having a rotating drill burr and a nonrotating drill nose, comprising:
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a cylindrical housing assembly defining a proximal end and a distal end, said housing assembly defining an internal bore a fixed insert disposed within said housing distal end defining a plurality of axially protruding fixation pins, and an adaptor insert having an outer cylindrical surface dimensioned to freely slide into said housing bore and having an inside bore shaped to engage said drill nose, whereby when said housing distal end is placed against said implant and said adaptor insert is placed onto said drill nose, said drill burr is guided to form a hole in said implant of a limited depth. - View Dependent Claims (9, 10, 11)
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Specification